Overall, this meets my needsThe included instructions are poorly written and confusing, but the youtube video is clearer; watch what to do, and how long to press the buttons (they are somewhat timing sensitive). Then write some notes.Web pages and PDFs are cheap, "Honeywell" Jasco ---- a well-written twenty page manual (online) with a dozen usage examples would save even more confusion. Test the instructions on many users - learn what they need to know, not what you feel like saying. For the cost of a few dozen free samples to volunteers who make phone videos of their fumblings, you can perfect your instructions, increase sales, reduce returns, and improve your reputation and Amazon product ratings.That said, the interface accomplishes a lot with a few buttons, once you learn how to use them.The unit contains a battery, and batteries do not last forever. The warranty is two years. Take notes (including programming times); if the unit lasts a couple of years, you probably got your money's worth, and will buy another. But you don't want to spend time remembering how to program the replacement.Batteries in landfills are a no-no. There are no instructions for proper disposal. When this unit fails, I can probably crack it open, remove the battery, and recycle it with my other batteries. I don't want to reuse the unit after opening it, that would be a safety hazard.The unit is quite small, and the lettering is as well. I'm nearsighted, so I can look close, but older people with presbyopia, or farsighted, might need a magnifier. Small is my preference; I can fit two side by side on a power strip or wall plate. This is a two-terminal unit with polarized plug - if this feeds a three prong plug, you will need a three prong to two prong adapter, with a long enough ground tail that you can reach the grounding screw on the wall plate some distance away.My application is unusual: I sometimes forget to take my morning or evening pills, and I take too many to fit most pill reminder boxes. I don't want a reminder that makes noise, and I prefer enough indication light so that I can see it from 20 feet away. So I use these to drive small, low power colored light bulbs vonnected through small "lamp socket to plug" adapters ("Comyan E26", also purchased from Amazon).My schedule is chaotic, so I set each one to go on and off for two differnt six hour intervals around the recommended pill time. After I take my pills, I push the button to turn out the light. It will come back on the next day. When I get older, I will probably take pills four times a day, so I can use all four intervals on two timers. For now, a different colored light for each different pill interval makes an easier reminder.Living 24x7 indoors during the Covid pandemic isn't easy. Every day is "blursday". Timed lights improve discipline and remove some of the blur. Well worth the small expense.